// JavaScript Document

function startMove(obj,json,fn){
	clearInterval(obj.timer);
	obj.timer = setInterval(function(){
		
		var bBtn = true;
		
		for(var attr in json){
			
			var iCur = 0;
			if(attr == 'opacity'){
				iCur = Math.round(getStyle(obj,attr)*100);
			}
			else{
				iCur = parseInt(getStyle(obj,attr))||0;
			}
			
			var iSpeed = (json[attr] - iCur)/8;
			iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
			
			if( json[attr] != iCur ){
				bBtn = false;
			}
			
				
			if(attr == 'opacity'){
				obj.style.filter = 'alpha(opacity='+ (iCur + iSpeed) +')';
				obj.style.opacity = (iCur + iSpeed)/100; 
			}
			else{
				obj.style[attr] = iCur + iSpeed + 'px';
			}
			
		}
		
		if(bBtn){
			clearInterval(obj.timer);
			if(fn){
				fn.call(obj);
			}
		}
		
	},30);
}


function getStyle(obj,attr){
	if(obj.currentStyle){
		return obj.currentStyle[attr];
	}
	else{
		return getComputedStyle(obj,false)[attr];
	}
}